PLATE type heat exchanger is preferred for following advantage
Which of the main shaft segments listed below, that are connected with the main engine, are coupled to the tail shaft flange?
Which of the following statements represents the main difference between a stuffing box gland and a mechanical seal for sealing the shaft of a centrifugal pump?
Which of the following statements represents the proper relative direction of flow through a globe valve?
The emergency bilge suction valve is typically used _____________.
A one ton air conditioning system has which of the listed operating characteristics?
The conical steel or composition cone installed on a propeller, known as a fairwater cone, provides which of the following benefits?
Personnel working with refrigeration systems and subject to the exposure of refrigerants should wear _______________.
The heat required to change a substance from a solid to a liquid while at its freezing temperature, is known as the latent heat of _____________.
A leaking suction valve in the second stage of a two stage, high pressure, air compressor can cause excessively high ________________.
In Vessel construction, beam brackets are triangular plates joining the deck beam to a
A portion of the cargo of an LNG carrier boils off during each voyage. How the cargo boils off is normally handled?
Distilled water from an evaporator may be discharged into a potable water tank
When using a handheld hacksaw, you should apply pressure only on the forward stroke ____________.
Tapping threads into a blind hole should be finished by using a ______
It is desirable for an auxiliary boiler safety valve to pop open and reseat quickly to
In a shell-and-tube type hydraulic fluid cooler, the amount of heat transferred from the hydraulic fluid to the cooling water depends upon ________________.
Which of the following describes the purpose of a striker or doubler plate?
The purpose of the programmed purge cycle on an automatically fired auxiliary boiler is to
With reference to a vessel's structural integrity, the most significant characteristic of a cryogenic liquid is its ______________.
Positive displacement, helical gear pumps are well suited for pumping oil because
The designation "schedule 80 extra strong " refers to ____________.
The charging of a refrigerating system should be carried out by adding _____________.
If the intercooler relief valve lifts while an air compressor is operating under load, you should check for ____
An important consideration in selecting a lubricating oil for use in a refrigeration compressor is for the oil to ____________.
Heavy soot accumulations in an auxiliary boiler could be caused by _____
For carry out major work in tank –
The ambient heat in an engine room which is identified by only a change in temperature is known as
Which of the devices listed prevents water from entering a ship's hull via the propulsion shaft?
The cylinders and intercoolers of most low pressure air compressors are cooled by _
The factors that determine the service life of packing in a pump will include which of the following conditions?
An axial piston pump differs from a radial piston pump, as the pistons of an axial piston pump are positioned _________.
The usual number of single-acting pistons used in a variable stroke axial-piston pump used for steering gears is _____________.
In reference to air conditioning, when air attains the maximum amount of moisture it can hold at a specific temperature, it is said to be _____________.
The presence of scale and dirt on the saltwater side of lube oil cooler is usually indicated by ___________.
Fabric type packing, such as flax or hemp, is best suited for _____________.
Increasing the rotational speed of a cargo pump the pump flow rate will:
Piping cross-sections over 30 cm in diameter are sized by the __________.
Which of the materials listed is used as the dynamic seal material on mechanical seals installed on most centrifugal pumps used in water service?
The pressure produced within the oil wedge of a rotating journal is ____.
One characteristic of a lubricating oil adversely affecting the results of centrifuging is ____________.
Evaporator pressure testing in
Short cycling of a refrigeration compressor refers to _____________.
The ability of a metal to be hammered, or rolled out is called its ___________.
Which of the following problems occurring in a hydraulic system can be caused by the use of an oil having a viscosity lower than specified?
The by-products of oxidation, as a result of water contamination of hydraulic oil, are generally ____________.
Which of the listed problems is occurring if a coil type high pressure evaporator constantly requires an increase in the coil steam pressure in order to maintain capacity?
The only means of removing the latent heat of condensation from a refrigerant in the normal refrigeration cycle is by ________.
Latent heat can be defined as the heat which must be added to a substance in order to change it from a
Boiler water level control, controlling swell and shrink of boiler with